I love and use my coloured Cardstock. But there are some faves I buy in larger packs and some I rarely use so I just buy a mixed pack so I have those colours. Some I almost never touch but then all of a sudden it becomes an ‘in’ colour and it matches a few paper packs I have. So I’m glad to have it. Because I only keep a few sheets of each colour, it doesn’t take up a lot of room. Even if you decide to pare down your colllection, I’d recommend keeping a few sheets of each.